3:1 Black Adhesive heat shrink tube

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This listing is for four (4) feet of black adhesive lined 3:1 heat shrink in your choice of inside dimension sizes.

Note this is a tube style, kind of looks like an inner tube so it is always open but will be folded tight to fit in the package. Also note this has an average wall thickness of .018-.023

We also sell other sizes of black shrink in 2:1 or 3:1 and double wall adhesive, plus clear PVC shrink and black PVC sleeve. Also expandable braiding in stainless and black flex.


Just as a gauge you can fit the following amount of 18 ga GXL wires inside.


1/4 Inch can be used for up to 5, 18ga wires

3/8 Inch can fit up to 10, 18ga wires

½ Inch can fit up to 18, 18ga wires

¾ Inch can fit over 30+ 18ga wires


Note: shrink may be flat or round when you get it but has the ID listed.

 Below are some specs from the manufacture.

Polyolefin Adhesive Heat Shrink Tubing Features:

  • Shrinkage Ratio: 33% (3:1) @ 121°C
  • Longitudinal Shrinkage: -15% (max.)
  • Operating Temp. Range: -55°C to +110°C
  • Dielectric Strength: 700 V/mil
  • UL Rating: 600V @ 125°C
  • Volume Resistivity: 1014 ohm-cm (min.)
  • Specific Gravity: 1.2 (min.)
  • Tensile Strength: 2,100 psi
  • Ultimate Elongation: 300% (min.)
  • Water Absorption: 0.3% (min.)

Polyolefin Adhesive Heat Shrink Tubing Characteristics:

  • This adhesive heat shrink tubing product is flexible Polyolefin with a thin layer of Thermoplastic adhesive for exceptional strain relief and moisture protection. It is flame retardant and ideal for strain relief, sealing, encapsulating, moisture and corrosion protection of wires, terminals and connections. The adhesive lining, when cooled, provides a flexible and waterproof barrier. The adhesive lined shrink tubing provides protection of electrical components, wire splices or the bundling of wire. This adhesive heat shrink tubing has a shrink ratio of 3 to 1.

Polyolefin Adhesive Heat Shrink Tubing Description:

  • CL3
  • RoHS Heat Shink Tubing RoHS Compliant

CL3 3:1 Polyolefin Adhesive Heat Shrink Tubing
3:1 Shrink Ratio

Polyolefin Adhesive Heat Shrink Tubing Specifications:

  • Moisture protection
  • Creates corrosion resistant seal
  • Heat shrink ratio for use over irregular shapes
  • For use on electrical connections, splices, breakouts
  • For sealing CATV subscriber drop line connections
  • Ideal for field installations
  • Cuts easily

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